Version 0.3.7.4

dart/sdk/lib/core/string_buffer.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of dart.core;
 
 /**
  * The StringBuffer class is useful for concatenating strings
  * efficiently. Only on a call to [toString] are the strings
  * concatenated to a single String.
  */
-abstract class StringBuffer {
+class StringBuffer implements StringSink {
 
   /// Creates the string buffer with an initial content.
-  external factory StringBuffer([Object content = ""]);
+  external StringBuffer([Object content = ""]);
 
   /// Returns the length of the buffer.
-  int get length;
+  external int get length;
 
-  // Returns whether the buffer is empty.
-  bool get isEmpty;
+  /// Returns whether the buffer is empty.
+  bool get isEmpty => length == 0;
 
-  /// Converts [obj] to a string and adds it to the buffer.
-  void add(Object obj);
+  /**
+   * Converts [obj] to a string and adds it to the buffer.
+   *
+   * *Deprecated*. Use [write] instead.
+   */
+  @deprecated
+  void add(Object obj) => write(obj);
+
+  external void write(Object obj);
+
+  void writeAll(Iterable objects) {
+    for (Object obj in objects) write(obj);
+  }
+
+  void writeln(Object obj) {
+    write(obj);
+    write("\n");
+  }
+
+  /**
+   * Adds the string representation of [charCode] to the buffer.
+   *
+   * *Deprecated* Use [writeCharCode] instead.
+   */
+  @deprecated
+  void addCharCode(int charCode) {
+    writeCharCode(charCode);
+  }
 
   /// Adds the string representation of [charCode] to the buffer.
-  void addCharCode(int charCode);
+  void writeCharCode(int charCode) {
+    write(new String.fromCharCode(charCode));
+  }
 
-  /// Adds all items in [objects] to the buffer.
-  void addAll(Iterable objects);
+  /**
+   * Adds all items in [objects] to the buffer.
+   *
+   * *Deprecated*. Use [writeAll] instead.
+   */
+  @deprecated
+  void addAll(Iterable objects) {
+    for (Object obj in objects) write(obj);
+  }
 
-  /// Clears the string buffer.
-  void clear();
+  /**
+   * Clears the string buffer.
+   *
+   * *Deprecated*.
+   */
+  @deprecated
+  external void clear();
 
   /// Returns the contents of buffer as a concatenated string.
-  String toString();
+  external String toString();
 }